Chemistry · Some Basic Concepts of Chemistry

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).\n Assertion (A): The formula mass of sodium chloride is taken as 58.5 u instead of molecular mass.\n Reason (R): Solid sodium chloride does not exist as a single discrete molecule; rather, ions are arranged in a three-dimensional lattice structure. \nIn the light of the above statements, choose the correct answer from the options given below:

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.